The Yoga Sutras of Patanjali are a collection of 196 Indian sutras (aphorisms) on the theory and practice of yoga. The Yoga Sutras were compiled prior to 400 CE by Sage Patanjali who synthesized and organized knowledge about yoga from older traditions. The Yoga Sutras of Patanjali was the most translated ancient Indian text in the medieval era, having been translated into about forty Indian languages and two non-Indian languages: Old Javanese and Arabic. David Gordon White points to a period of when the text fell into relative obscurity for nearly 700 years from the 12th to 19th century, and made a comeback in late 19th century due to the efforts of Swami Vivekananda, the Theosophical Society and others. It gained prominence again as a comeback classic in the 20th century.